Transport of Mixture of Cohesive and Non-Cohesive Sediments in Rivers

Dear Colleagues,

River sediment is generally composed of a mixture of fine-grained cohesive sediment (particles finer than 62 microns in size) and coarse-grained non-cohesive sediments (particles coarser than 62 microns in size). Cohesive sediments are derived from the overland and tributary in flows, as well as river-bank erosion. The non-cohesive sediment fractions are normally found in the riverbeds. The transport characteristics of cohesive and non-cohesive fractions are very different: cohesive sediment fractions normally undergo flocculation, as they are subjected to the river flow field, whereas the non-cohesive fraction behaves as individual particles. Critical conditions for erosion and deposition for the two types of sediments are also very different. While there is extensive research on these two types of sediment individually in the literature, research on the transport characteristics of the mixture of these two sediment types is limited. To highlight current research on the transport and mixture of cohesive and non-cohesive sediment fractions in river flows, we are assembling a Special Issue to publish high-quality research papers in this area of research. We are encouraging researchers in this field to submit their original research articles and review papers outlining their progress in this area to this Special Issue.

Dr. Bommanna Krishnappan
Guest Editor

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